In one embodiment of the present disclosure, an antenna assembly includes a patch antenna array including an upper patch antenna layer, a lower patch antenna layer, and a spacer therebetween, wherein the spacer includes a plurality of apertures defined by cell walls, wherein the each aperture aligns with an upper patch antenna element and a lower patent antenna element from the patch antenna array.

In one embodiment of the present disclosure, an antenna assembly includes a patch antenna array including an upper patch antenna layer, a lower patch antenna layer, and a spacer therebetween, wherein the spacer includes a plurality of apertures defined by cell walls, wherein the each aperture aligns with an upper patch antenna element and a lower patent antenna element from the patch antenna array.

A compact antenna apparatus for a mobile communication system includes: a radome having at least one frequency band radiating element provided therein; at least one phase shifter portion which is provided in an inner side of the radome and which is connected to the radiating element to adjust a tilting angle of the radiating element; and a rotary knob portion which is provided so as to be exposed to the outside of the radome and which is directly coupled to the phase shifter portion to drive a phase shifter.

A compact antenna apparatus for a mobile communication system includes: a radome having at least one frequency band radiating element provided therein; at least one phase shifter portion which is provided in an inner side of the radome and which is connected to the radiating element to adjust a tilting angle of the radiating element; and a rotary knob portion which is provided so as to be exposed to the outside of the radome and which is directly coupled to the phase shifter portion to drive a phase shifter.

A medical apparatus includes a tubular shaped enclosure configured for implantation into a tissue medium; a receiver array with a multitude of receiver elements housed within the enclosure attached to the associated electronics via a flexible circuit board construction, wherein the receiver array is configured to receive one or more electromagnetic input signals of a combination of both power and data from an external transmitter via non-inductive coupling energy transfer, wherein the receiver array is composed of multiple receiver elements, wherein each receiver element within the receiver array includes an electrically small antenna and one or more processor circuits connected to the port of the antenna on the same physical substrate, wherein the receiver array and associated flexible circuit board are directly attached to two or more electrodes that are in direct contact with biological tissue for the purpose of transmitting stimulation pulses to tissue.

An antenna device includes a ground plate providing a ground potential, a first feeding part and a second feeding part provided to the ground plate, a vertical antenna element electrically connected to the first feeding part, spaced apart from a first surface of the ground plate, and configured to emit a radio wave having a polarization plane in a direction perpendicular to the ground plate, a horizontal antenna element electrically connected to the second feeding part, arranged in parallel with the ground plate, and configured to emit a radio wave having a polarization plane in a direction parallel to the ground plate, and an antenna base disposed on a second surface of the ground plate, and facing the ground plate and the horizontal antenna element. In the antenna base, at least a portion facing the horizontal antenna element is a dielectric.

Techniques are provided for improving the performance of a multi-band antenna in a wireless device. An example wireless device includes at least one radio frequency integrated circuit, and at least one patch antenna operably coupled to the at least one radio frequency integrated circuit, including a first patch operably coupled to the at least one radio frequency integrated circuit, a ground plane disposed below the first patch, and a plurality of via wall structures disposed around the first patch, wherein each of the plurality of via wall structures is electrically coupled to the ground plane.

An antenna array may be provided. The antenna array comprises N radiating elements and M phase shifters, where M is less than N. N may be an integer greater than or equal to three. M may be an integer greater than or equal to two. The N radiating elements may be arranged linearly. Two adjacent radiating elements may be separated substantially by an integer multiple of a first spacing. The N radiating elements may be grouped into a first number of groups, wherein each of the groups comprises at least one and at most M adjacent radiating elements. The N radiating elements may be connected to the M phase shifters in such a way that: one radiating element is connected to at most one phase shifter; and two sequential radiating elements connected to the same phase shifter are separated by a second spacing, the second spacing being substantially an integer multiple of M multiplied by the first spacing.

An antenna array may be provided. The antenna array comprises N radiating elements and M phase shifters, where M is less than N. N may be an integer greater than or equal to three. M may be an integer greater than or equal to two. The N radiating elements may be arranged linearly. Two adjacent radiating elements may be separated substantially by an integer multiple of a first spacing. The N radiating elements may be grouped into a first number of groups, wherein each of the groups comprises at least one and at most M adjacent radiating elements. The N radiating elements may be connected to the M phase shifters in such a way that: one radiating element is connected to at most one phase shifter; and two sequential radiating elements connected to the same phase shifter are separated by a second spacing, the second spacing being substantially an integer multiple of M multiplied by the first spacing.

The present invention provides a balanced dipole unit and a broadband omnidirectional collinear array antenna formed by the balanced dipole unit. Balanced dipole unit circuits in the balanced dipole unit are symmetrically distributed on two sides of a circuit carrier, and a feeder and a ground wire in the balanced dipole unit are also symmetrically distributed, so that the balanced dipole unit has a completely symmetrical structure. A principle of the symmetrical structure is the same as a differential design principle and a self-balancing principle in the circuit design, thereby reducing current coupling between the balanced dipole units and eliminating the need of using an additional choke circuit when a broadband omnidirectional collinear array antenna is formed by the balanced dipole unit.